Suffusion theme – FIXED SIDEBAR

I want to fix ONE sidebar, the left one. How is this possible? I’ve tried all sorts of things. Right now it’s disappeared. I’ve succeeded in fixing the sidebar (and the static tabbed sidebar within it), but then it’s moved to the middle of the page. I need it on the SIDE, obviously.

By this point after trying all different things I restored the original stylesheet and this is the only edit I’ve made so far:

But the sidebar won’t appear anywhere now, I can’t even find it using my web developer toolbar in Firefox… I don’t know where it could have gone… How can I solve this? All I want is it to be friggen fixed in place. Please help.